Extension ladder



J. DIOU EXTENSION LADDER July 4, 1933.

Filed Feb. 9, 1932 E u l? a aulva. ,Ej 188 M f "w/ En H/ n.. iam. f /a99H ,8

INVENTOR w v/ N m U J ATTORNEY Patented July 4, 1933 UNiTED STA rarezasJULIAN DIOU, OF NEWARK, NEW JERSEY ExTnNsroN LADDER Application filed1lliebruary 9, 1932. Serial No. 591,870.

This invention relates to extension ladders and it is particularlyapplicable to fire engine ladders.

vOne of the objects of the invention is the provision of means on an`extension ladder for safely securing a person to the ladder and at thesame time permitting him to move up and down the ladder, and sidewise toeither side and also away from the ladder with his arms free to work.

YOther objects of the invention will be appreciated from a readingof-the followingk speciiication.

The invention will be fully and comprehensively understood from aconsideration of the following'detailed description when read inconnection with the accompanying drawing which forms part of theapplication with the understanding, however, that the improvement iscapable of extended application and'is not confined to the exact showingof the drawing nor to the precise construction described and, therefore,such changes and modiiications may be made therefrom as do not affectthe spirit of the invention nor exceed the scope thereof as expressed inthe appended claims.

In the drawing:

Fig. 1 is a fragmentary front elevation of an extension ladder embodyingone form of my invention. i

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1, looking inthe direction of the arrows; and

Fig. 3 is a horizontal section taken on line 3-#3 of Fig. 1, looking inthe direction of the arrows. A

Referring to the drawing for a more detailed description thereof, theextension lad-` der comprises ladders 5 and 6 slidably connected to eachother in the usual manner by retaining means 7. Telescoping members 8and 9 are secured to the rungs of the ladder 5 and 6 respectively, saidtelescop'ing members being U-shaped with'inwardly turned edge portions8a and 9a, respectively, said edge portions being spaced from each otherto form openings 8?) and 9b, respectively, through which extends a link10 pivotally connected at 11 to a link 12, said link being secured to ahelical spring 13 which is fastened to a loop 14 adapted to go aroundthe body of a person on the ladder, said loop being adapted to be openedand closed and provided with releasable holding or locking means 15 ofany suitable or preferred construction. The link 10 is secured to aroller 16 which is adapted to roll on the telescop ing members 8 and 9within and in contact with the same so that the person on the ladder mayfreely move up and down the same. The pivotal connection between thelinks 10 and 12 allows for movement of the person to either side of theladder while the spring 18 permits the movement of the person away fromthe ladder. l

Before going up the ladder, the person inserts the roller '16 inposition within the member 8 and on stepping on the ladder to come down,as a fireman, for example, would after l" coming out of anupper floor ofa building, the roller is inserted in the upper telescoping member 9.

It is obvious that the device of my invenj tion allows a person on theladder free use of slidable relative to each other and secured "n one toeach of the ladders and means slidable relative to said telescopingmembers and held thereby and adapted to be secured to the body of aperson on the ladder.

2. An extension ladder including ladders slidably connected, membersslidable on each other and secured one to each of the ladders, meansadapted to be secured to the body of a person on the ladder and meansfor slidably securing the last mentioned means to said slidable members.

3. An extension ladder including ladders slidably connected, membersslidable on each other and secured one to each of the ladders, meansadapted to be secured to the body of a person on the ladder and means,including a resiliently extensible member, for slidably securing thelast mentioned means to said slidable members. y

4. An extension ladder including ladders other and secured one to eachof the ladders, means adapted to be secured to the body of a person onthe ladder and means, including a roller adapted to run on said slidablemembers, for slidably securing the last mentioned means to said slidablemembers.

vIn testimony whereof I hereby allx my signature.

JULIAN DIOU.

